<template>
  <view class="xl-file-tool">
    <slot></slot>
  </view>
</template>

<script setup>
import { ref, reactive, onMounted, onBeforeUnmount } from 'vue';

// 状态变量
const isProcessing = ref(false);
const isUploading = ref(false);
const isPaused = ref(false);

// 处理记录
const processedFiles = ref([]);
const processedImages = ref([]);
const uploadedFiles = ref([]);

// 格式化文件大小
const formatFileSize = (bytes) => {
  if (bytes === 0) return '0 B';
  const k = 1024;
  const sizes = ['B', 'KB', 'MB', 'GB', 'TB'];
  const i = Math.floor(Math.log(bytes) / Math.log(k));
  return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
};

// 格式化日期
const formatDate = (date) => {
  const d = new Date(date);
  return `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, '0')}-${String(d.getDate()).padStart(2, '0')} ${String(d.getHours()).padStart(2, '0')}:${String(d.getMinutes()).padStart(2, '0')}`;
};

// 获取文件类型
const getFileType = (fileName) => {
  const ext = fileName.split('.').pop().toLowerCase();
  const typeMap = {
    'jpg': 'image', 'jpeg': 'image', 'png': 'image', 'gif': 'image', 'webp': 'image',
    'doc': 'doc', 'docx': 'doc', 'xls': 'xls', 'xlsx': 'xls', 'ppt': 'ppt', 'pptx': 'ppt',
    'pdf': 'pdf', 'txt': 'txt', 'zip': 'zip', 'rar': 'zip', '7z': 'zip'
  };
  return typeMap[ext] || 'other';
};

// 生命周期钩子
onMounted(() => {
  // 初始化组件
});

onBeforeUnmount(() => {
  // 清理资源
  if (isUploading.value) {
    cancelUpload();
  }
});

// 导出组件方法
defineExpose({
  // 压缩文件
  compressFile: async (filePath, options = {}) => {
    try {
      isProcessing.value = true;
      
      // 模拟压缩过程
      await new Promise(resolve => setTimeout(resolve, 2000));
      
      // 创建压缩后的文件记录
      const compressedFile = {
        name: filePath.split('/').pop() + '.' + (options.format || 'ZIP').toLowerCase(),
        type: '压缩文件',
        format: options.format || 'ZIP',
        size: Math.floor(Math.random() * 1000000) + 10000,
        path: filePath + '.' + (options.format || 'ZIP').toLowerCase(),
        date: new Date()
      };
      
      // 添加到处理记录
      processedFiles.value.unshift(compressedFile);
      
      return { success: true, path: compressedFile.path };
    } catch (error) {
      console.error('压缩文件失败:', error);
      return { success: false, error: error.message };
    } finally {
      isProcessing.value = false;
    }
  },
  
  // 解压文件
  extractFile: async (filePath, options = {}) => {
    try {
      isProcessing.value = true;
      
      // 模拟解压过程
      await new Promise(resolve => setTimeout(resolve, 2000));
      
      // 创建解压后的文件记录
      const extractedFile = {
        name: filePath.split('/').pop().replace(/\.[^.]+$/, ''),
        type: '解压文件',
        format: '解压',
        size: Math.floor(Math.random() * 2000000) + 20000,
        path: filePath.replace(/\.[^.]+$/, ''),
        date: new Date()
      };
      
      // 添加到处理记录
      processedFiles.value.unshift(extractedFile);
      
      return { success: true, path: extractedFile.path };
    } catch (error) {
      console.error('解压文件失败:', error);
      return { success: false, error: error.message };
    } finally {
      isProcessing.value = false;
    }
  },
  
  // 转换图片
  convertImage: async (filePath, options = {}) => {
    try {
      isProcessing.value = true;
      
      // 模拟转换过程
      await new Promise(resolve => setTimeout(resolve, 2000));
      
      // 创建转换后的图片记录
      const convertedImage = {
        name: filePath.split('/').pop().replace(/\.[^.]+$/, '') + '.' + (options.format || 'JPEG').toLowerCase(),
        format: options.format || 'JPEG',
        size: Math.floor(Math.random() * 500000) + 5000,
        path: filePath,
        date: new Date()
      };
      
      // 添加到处理记录
      processedImages.value.unshift(convertedImage);
      
      return { success: true, path: convertedImage.path };
    } catch (error) {
      console.error('转换图片失败:', error);
      return { success: false, error: error.message };
    } finally {
      isProcessing.value = false;
    }
  },
  
  // 上传文件
  uploadFile: async (filePath, options = {}) => {
    try {
      isUploading.value = true;
      
      // 模拟上传过程
      await new Promise(resolve => setTimeout(resolve, 3000));
      
      // 创建上传后的文件记录
      const uploadedFile = {
        name: filePath.split('/').pop(),
        url: 'https://example.com/uploads/' + filePath.split('/').pop(),
        size: Math.floor(Math.random() * 5000000) + 50000,
        date: new Date()
      };
      
      // 添加到上传记录
      uploadedFiles.value.unshift(uploadedFile);
      
      return { success: true, url: uploadedFile.url };
    } catch (error) {
      console.error('上传文件失败:', error);
      return { success: false, error: error.message };
    } finally {
      isUploading.value = false;
    }
  },

  // 获取处理记录
  getProcessedFiles: () => processedFiles.value,
  getProcessedImages: () => processedImages.value,
  getUploadedFiles: () => uploadedFiles.value,
  
  // 工具方法
  formatFileSize,
  formatDate,
  getFileType
});
</script>

<style>
.xl-file-tool {
  width: 100%;
}
</style> 